Several microprocessors surpass the GHz threshold: Pentium III – Coppermine, Pentium III Xeon – Cascades, Pentium 4 – Willamette, Celeron – Coppermine, Xeon – Foster, Duron – Morgan, Pentium III – Tualatin, Celeron – Tualatin, Pentium 4 Northwood ‘A’ (all from Intel), and Athlon – Thunderbird, Athlon – Palomino, Duron – Morgan (all from AMD’s K7 family). The transistor count of a Pentium 4 is around 50MW.
